Casio FX83ES Scientific Calculator - Answered Questions & Fixed issues

It would be nice if you could learn to like the MathIO display mode. as to calculations you should select Mode 1:COMP, unless you need stat or table.

There isn't one. Use the "=" button at the bottom right of the keyboard.

The inverse cosine function is defined for arguments from -1 to +1. 6 is outside of this domain, thus the error. Do you get an error if you try the inverse cosine of 0.6, for example? If you're getting the same error for the inverse tangent, could you post an example?

Clear the calculator. Press [SHIFT][9] (CLR) or [SHIFT][MODE] (Setup) 8:Norm and choose Norm1 or Norm 2. Select the number of digits.

You need to use parentheses to group the additions together since division has precedence over subtraction. If you enter 1.94+2.35+4.38/3 then calculator takes that to mean 1.94+2.35+(4.38/3). You need to enter it as (1.94+2.35+4.38)/3.

To get the tangent of an angle, press "tan", enter the angle, and press "=".See the example for sin on page E-10 of this manual: http://support.casio.com/pdf/004/fx-82ES_etc_E.pdf, replacing the "sin" with "tan".

Are you specifying a base? If you don't specify a base the calculator will default to 10, and thus you get exactly the same thing as using the log key.

Are you using the right type of logarithms? The calculator provides for two types: common (base 10) and natural (base e).Could you post an example or two, with the answers you get and the expected answers?

Sorry, but this calculator does not have an equation solver.

Follow the instructions on page E-5 of this manual.

It takes a LR44 or equivalent. See page E-4 of this manual.

To get the angle from a value of the cosine, you use the arc cosine or arcosin function. It is the shifted function of the cosine key. Be careful with the units. If the calculator is configured with the degree angle unit, the value returned by the arc cosine will be in degrees. If the angle unit is the radian, the result will be in radians.

Yes. Press SHIFT MODE 2 to select the LineIO mode.

Curves drawn with the help of a graphing calculator are no mere sketches, they are a lot more accurate than a human hand will be able to draw.Unfortunately for you, the calculator you are using is no graphing calculator and thus cannot draw. However, it is able to generate a table of values which you might use to sketch curve on a sheet of graph paper.

3.28 squared is 10.7584 .10.7584 times 40 is 430.336 .It appears your calculator is correct. I get the same result on multiple calculators, as well as by hand.Let's work this backwards:431.8 divided by 40 is 10.795 .The square root of 10.795 is about 3.28557 .

You can download the manual and the appendix here.

1÷1700 expressed as a decimal is 0.000588235, which is 5.882...×10^-4. [NB not 10^4]

To convert this to a percent, remember that "per cent" means "per 100" which also means "divide by 100". To keep the answer correct, if you are dividing by 100 you must also multiply by 100.

The get the answer in percent, you must therefore multiply the previous answer by 100 to get 0.00588235 percent. (or 5.882...×10^-2 percent).

You may be working in degrees when you need to be in radians, or vice versa.

Press the MODE button until it offers you the choice D R G (Degrees, radians, grads) and select the corresponding number. Then try again.

One inch is exactly 2.54 cm, so 1 inch squared is a larger area than 1 cm squared.

Set the input/output mode to LineIO

1. Press SHIFT MODE to enter (SetUp).
2. Press 2:LineIO

Your results will be displayed in decimal format.